Setting axes with center in origin (0,0) in plotted variables.

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Kasper
Kasper el 12 de Mayo de 2011
Comentada: Jan Kappen el 3 de Mayo de 2022
Hey community, I have two variables with x 1 double data. I am to plot these two in a plot, but would like to have the axes to be intersecting each other in origin (0,0). Instead in the axes are shown with intersecting at for example (-2000,-6), my lowest x-value is -1200, lowest y-value is -6. Here it would be great to have the x-axis through y=0, so that differences from y=0 easily can be seen graphically.
How would I do that, is there a command you could use in the script written, to make it move the axes? I have a large script to evaluate a lot of graphs in, so a MATLAB-command would be preferable to a tool in the figure builder.
The (simple) code used is as following:
%%person5 - Puls
hold on
plot(person5_ethanol_ekgpuls_tid,person5_ethanol_ekgpuls,'g.-')
xlabel('Tid/Sek')
ylabel('Blodtryk/MmHg')
title('Forsøgsperson #5 Ethanol Ekg Puls')
Hope that my question is understandable and that it can be done.

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Walter Roberson
Walter Roberson el 12 de Mayo de 2011
  2 comentarios
Kasper
Kasper el 14 de Mayo de 2011
Great, just what I needed, especially the sidenote on the commands hline and vline was useful for me. Thanks

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Más respuestas (3)

Rini Varghese
Rini Varghese el 1 de Mzo. de 2018
I am sure you are aware of the most straightforward solution to this is now available directly through MATLAB's axes option:
ax = gca;
ax.XAxisLocation = 'origin';
ax.YAxisLocation = 'origin';
  1 comentario
Jason Duvall
Jason Duvall el 18 de Oct. de 2020
Why are you sure the OP was aware of this? If that was the case, the question probably would not have been posted.

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Arnaud Miege
Arnaud Miege el 12 de Mayo de 2011
Does the axis command do the trick?
Arnaud
  2 comentarios
Muhammad Asif
Muhammad Asif el 12 de Ag. de 2020
The simplest soution to this problem is
set(gca, 'XAxisLocation', 'origin', 'YAxisLocation', 'origin')

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Muhammad Asif
Muhammad Asif el 12 de Ag. de 2020
set(gca, 'XAxisLocation', 'origin', 'YAxisLocation', 'origin')

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